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ANAT 315 Term 1 > Lecture 2 > Flashcards

Lecture 2 Flashcards

(56 cards)

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1
Q

What are the three origins of the pectoralis majoe?

A

The anterior surface of clavicle, anterior surface of sternum and external oblique apeunorosis

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2
Q

What is the insertion of the pectoralis major?

A

greater tubercle of humerus

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3
Q

What are the actions of th pectoralis major? (3)

A

Addcucts, flexes, medially rotates arm

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4
Q

What is the innervation of the pectoralis major? (2)

A

medial and lateral pectoral nerve

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5
Q

Pectoralis minor: origin

A

ribs 3-5

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6
Q

What is the insertion of the pectoralis minor?

A

coracoid process of scapula

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7
Q

What is the action of the pectoralis minor?

A

pulls scapula down and anteriorly

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8
Q

What is the innervation of the pectoralis minor?

A

medical pectoral nerve

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9
Q

Subclavius: origin

A

1st rib

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10
Q

Subclavius: insertion

A

interior surface of clavicle

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11
Q

Subclavius: actions (2)

A

pulls down and stablizes clavicle

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12
Q

Subclavius: innervation

A

C5-C6

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13
Q

Serratus anterior: origin

A

surface of ribs 1-8

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14
Q

Serratus anterior: insertion

A

medial border of scapula on costal surface

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15
Q

Serratus anterior: actions (2)

A

protract scapula, elevate ribs

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16
Q

Serratus anterior: inervation

A

long thoracic nerve

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17
Q

Serratus posterior - superior: origin

A

C7-T3 spinous processes

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18
Q

Serratus posterior - superior: insertion

A

superior border of ribs 2-4

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19
Q

Serratus posterior - superior: actions

A

elevate upper ribs

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20
Q

Serratus posterior - superior: innervation

A

T1-T4 ventral rami

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21
Q

Serratus posterior - inferior: origin

A

T11-L2 spinous processes

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22
Q

Serratus posterior - inferior: insertion

A

inferior border of ribs 9-12

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23
Q

Serratus posterior - inferior: actions

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A

depresses lower ribs

24
Q

Serratus posterior - inferior: innervations

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A

T9-T12 anterior rami

25
External intercostals: origin
inferior border of ribs
26
External intercostals: insertion
superior border of ribs below
27
External intercostals: action
elevate ribs (inspiration)
28
External intercostals: innervation
intercostal nerves
29
Internal intercostals: origin
inferior border of ribs
30
Internal intercostals: insertion
superior border of ribs below
31
Internal intercostals: actions
lower ribs (expiration)
32
Internal intercostals: innervation
intercostal nerves
33
Innermost intercostals: origin
inferior border of ribs
34
Innermost intercostals: insertion
superior border of ribs below
35
Innermost intercostals: action
lower ribs (experiation)
36
Innermost intercostals: innervation
intercostal nerves
37
Transverse Thoracis: origin
pleural surface of ribs 2-6 (anteriorly)
38
Transverse Thoracis: insertions (2)
posterior surface of sternum, xiphoid process
39
Transverse Thoracis: action
lower ribs (expiration)
40
Transverse Thoracis: innervation
intercostal nerves
41
Subcostals: origin
pleural surface of lower ribs (posteriorly)
42
Subcostals: insertion
superior border of ribs below; lower ribs
43
Subcostals: actions
confracts, pulls ribs down (expiration)
44
Subcostals: innervation
intercostal nerves
45
Diaphragm: origins (3)
xiphoid process of sternum, L1-L4 vertebrae, costal arch of ribs 7-12
46
Diaphragm: insertion
central tendon of diaphragm
47
Diaphragm: actions (2)
contracts and compresses abdomen (inspiration); relaxes, (expiration)
48
Diaphragm: innervation
phrenic nerve (C3,4,5 keeps the diaphragm alive)
49
Primary muscles for inspiration (2)
external intercostals, diaphragm
50
Ascessories muscles of inspiration (2)
scalenes, sternocleidomastoid
51
Primary muscles for expiration (2)
internacl intercostals, diagphragm
52
Ascessories muscles of expiration (2)
innermost intercostals, anterior abdominal wall
53
Blood supply - anterior - right side (5)
arch of aorta - brachiocephalic artery - right subclavian artery - right internal horacic artery - anterior intercostal arteries
54
Blood supply - anterior - left side (4)
arch of aorta - left subclavian artery - left internal thoracic artery - anterior intercostal arteries
55
Blood supply - posterior (3)
arch of aorta - descedning thoracic aorta - posterior intercostal arteries
56
Venous drainage (4)
hemiazygos v - accessory hemiazygos v - azygos v - superior vena cava

ANAT 315 Term 1 (9 decks)

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